package com.example.day05;

/**
 * @author Lenovo
 */
public class Demo10 {
    public static void main(String[] args) {
        int[] arr ={10,20,30};
        System.out.println("调用change方法前:" + arr[1]);
        change(arr);
        System.out.println("调用change方法后:" + arr[1]);

    }
    public static void change(int[] arr){
        arr[1] =200;
    }

}
